Special-shaped retraction frame

The utility model belongs to the field of oral cavity mouth gags, and particularly relates to a special-shaped retraction frame which comprises an upper cross beam, a lower cross beam and side rods on the left side and the right side, the position of the upper cross beam is higher than that of the l...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU QING, DONG SHUAI, TAO YONG, LI ZHANHUI, WANG QINGFENG, ZHAI JIACHANG, CHONG CHUANFENG, SHI QUAN, LIN XINBO, WANG RUI, SUN ZHIQIAN, ZHAO ZONGWEN, ZHANG ZHEN, HAN JUNNING, YAO DAOXING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY
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